671853930029593 has 2 divisors, whose sum is σ = 671853930029594. Its totient is φ = 671853930029592.

The previous prime is 671853930029567. The next prime is 671853930029621. The reversal of 671853930029593 is 395920039358176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611223366676624 + 60630563352969 = 24722932^2 + 7786563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671853930029593 is a prime.

It is not a weakly prime, because it can be changed into another prime (671853930059593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335926965014796 + 335926965014797.

It is an arithmetic number, because the mean of its divisors is an integer number (335926965014797).

Almost surely, 2^{671853930029593} is an apocalyptic number.

It is an amenable number.

671853930029593 is a deficient number, since it is larger than the sum of its proper divisors (1).

671853930029593 is an equidigital number, since it uses as much as digits as its factorization.

671853930029593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 330674400, while the sum is 70.

The spelling of 671853930029593 in words is "six hundred seventy-one trillion, eight hundred fifty-three billion, nine hundred thirty million, twenty-nine thousand, five hundred ninety-three".